93.0% of residents of Watertown speak English at home.
4.3% of residents speak Spanish at home (44% speak English very well, 18% speak English well, 26% speak English not well, 11% don't speak English at all).
2.2% of residents speak other Indo-European language at home (71% speak English very well, 7% speak English well, 14% speak English not well, 8% don't speak English at all).
0.3% of residents speak Asian or Pacific Island language at home (74% speak English very well, 6% speak English well, 20% don't speak English at all).
0.1% of residents speak other language at home (84% speak English very well, 16% speak English well).

Foreign born population: 684 (3.2%)
(35.8% of them are naturalized citizens)

Percentage of workers working in this county: 47.4%Number of people working at home: 166 (1.5% of all workers)

Means of transportation to work

Drove a car alone: 8,868 (81%)

Carpooled: 1,141 (10%)

Bus or trolley bus: 78 (1%)

Taxi: 95 (1%)

Motorcycle: 25 (0%)

Bicycle: 35 (0%)

Walked: 512 (5%)

Other means: 23 (0%)

Worked at home: 166 (2%)

First ancestries reported:

German: 10,422

Other groups: 1,385

Irish: 1,038

United States or American: 953

Norwegian: 653

Polish: 645

English: 522

Italian: 289

French (except Basque): 288

Swedish: 236

Dutch: 203

Danish: 141

Swiss: 141

Russian: 113

French Canadian: 111

Czech: 100

European: 88

Scottish: 72

Austrian: 64

Greek: 63

Belgian: 61

Welsh: 59

Scotch-Irish: 58

Slovak: 41

Czechoslovakian: 34

Finnish: 33

Subsaharan African:: 31

Nigerian: 25

Northern European: 21

Scandinavian: 21

Lithuanian: 20

British: 18

Canadian: 17

Australian: 13

Serbian: 13

Croatian: 11

Arab:: 9

Lebanese: 9

Armenian: 7

Yugoslavian: 7

Ukrainian: 7

Hungarian: 6

Slovene: 6

African: 6

West Indian (excluding Hispanic groups):: 6

Jamaican: 6

Turkish: 5

Romanian: 2

Latvian: 1

Most common places of birth for the foreign-born residents (%):

54%Mexico

8%Russia

7%Germany

4%Laos

3%Korea

2%United Kingdom

2%Canada

Place of birth for U.S.-born residents:

This state: 16,836

Northeast: 296

Midwest: 2,575

South: 687

West: 417

54% of Watertown residents lived in the same house 5 years ago. Out of people who lived in different houses, 38% lived in this county. Out of people who lived in different counties, 77% lived in Wisconsin.